Fagopyrum cymosum

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Fagopyrum cymosum
Fagopyrum cymosum.jpg
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Fagopyrum
F. cymosum
Binomial name
Fagopyrum cymosum
(Trevir.) Meisn.[1]
  • Coccoloba cymosa Lour.
  • Fagopyrum acutatum Mansf. ex K.Hammer
  • Fagopyrum chinense Raf.
  • Fagopyrum dibotrys (D.Don) H.Hara
  • Fagopyrum megaspartanium Q.F.Chen
  • Fagopyrum pilus Q.F.Chen
  • Fagopyrum triangulare Meisn. ex Wall.
  • Fagopyrum tristachyum (H.Lév.) Gross
  • Helxine acutata Kuntze
  • Oxygonum tristachyum (Baker) H.Perrier
  • Polygonum acutatum Lehm.
  • Polygonum cymosum Trevir.
  • Polygonum dibotrys D.Don
  • Polygonum labordei H.Lév. & Vaniot
  • Polygonum tristachyum Baker
  • Polygonum tristachyum H.Lév.

Fagopyrum cymosum, also known as tall buckwheat,[2] is a domesticated plant used in traditional Chinese medicine,[3] for animal feed, and as an ornamental plant.[2] It is native to much of China, and to Bhutan, Nepal, India, Burma, and Vietnam.[3]


The flowers are known for their high content of fagopyrin, a naphthodianthrone that provokes phototoxic effects known as fagopyrism.[4]


  1. ^ a b "Fagopyrum cymosum (Trevir.) Meisn.". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-03-08.
  2. ^ a b "Fagopyrum cymosum". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 16 December 2014.
  3. ^ a b Li Anjen and Suk-pyo Hong (2004). "Fagopyrum". Flora of China. 5.
  4. ^ Stojilkovski, K.; Glavač, N.; Kreft, S.; Kreft, I. (2013). "Fagopyrin and flavonoid contents in common, Tartary, and cymosum Buckwheat". Journal of Food Composition and Analysis. 32 (2): 126–130. doi:10.1016/j.jfca.2013.07.005.